The Battle of Clontarf was fought near Dublin in 1014 between forces associated with Brian Boru and a Norse-Irish alliance. Although later tradition often framed it as Ireland against the Vikings, modern scholarship sees a more complex conflict involving Irish, Norse, and regional rivalries. Its memory became larger than the battle itself.

Clontarf entered medieval Irish narrative through works such as Cogad Gáedel re Gallaib and was also connected with Norse saga tradition. The event shows how oral memory, dynastic propaganda, heroic lament, and cross-cultural storytelling can transform a battle into a literary symbol.